cell
a plant cell has a _________ but an animal cell does not
cell wall
a group of cells all doing the same kind of work is a
tissue
tool used to see tiny things
what is a microscope
smallest living part of an organism is called
a cell
the first layer of skin
epidermis
the jellylike liquid that surrounds the nucleus and includes the parts that help the cell live and grow is called
cytoplasm
a group of tissues all doing the same kind of work is called
part of the microscope you look through
eyepiece
two organs in the human body are the
heart, lungs, brain, stomach
tiny pathways that carry messages between the brain and other parts of the body called
nerves
the control center of the cell that directs the cells activities
nucleus
a group of organs all doing the same kind of work is called
system
part of the microscope where the slide goes
stage
the dermis contains the ____ and ____
blood vessels and sweat glands
sweat glands
the thin covering that holds the cell together
cell membrane
largest organ in the body
what is the skin
part of the microscope that makes the object bigger
lens
the way the body cools
releasing sweat from pores
tiny openings on the skin where the body releases sweat
sweat glands
single cell organism that looks like a blob of jelly and lives in water
what is an amoeba
two types of tissues
nerve and muscle
person who first discovered cells
robert hooke
epidermis is important because
keeps out harmful things such as germs and dirt, protects you
part of the base of each hair releases oil to protect the body
oil glands